“I’m so affectionate and gross with my wife, [but] this is a whole other level of vomit,” he continued. “They’re so in love. It’s really nice.”

“Because [their relationship] is in the public eye, a lot of people want to have their own bulls— opinions about it, but I’m, like, there,” he said. “I see it every day. I have a pretty unique perspective on it, and it’s real, man.”

Levine says the lovebirds are some of his best friends, but jokes, “I still tell [Blake], ‘I can’t believe you get to be with Gwen Stefani’…It’s just not f—ing right!”